The 1.8T is notorious for minor engine leaks and minor problems. Mine was leaking from the valve cover gasket, at the dealer it would be a $300 to $400 job. Fuck that shit. Its an easy DIY depending on your mechanical abilities. The part it self can be bought for $40 CDN!
My car has developed a rough idle which could be a few things; MAF, spark plugs, coil packs, oil leaking into coil pack cylinder which gets to the spark plugs. In my case, it is all over the above, haha. You can see in the pictures that there is quite a bit of oil in one of my coil pack cylinders.
Here is the link that I followed for my car, keep in mind, that different engine codes (ATW, AEB, AWM) are a little different.
http://www.audiworld.com/tech/index.html
This took me 1.5 hours because I got carried away when I cleaned the valve cover. Make sure you torque each valve cover nut to 10Nm, starting with the inner ones by the coil pack cylinders, then the outer ones criss-cross like how you would do you wheels.
Here it is....all 150hp/155tq of my A4, engine code ATW
Oil leaking at the valve cover gasket
Yup looks like it.
Progress - coil packs disconnected
Valve cover off
Cam chain tensioner - looks fine to me (source of ticking, aside for noisy valve lifters)
Oil in coil pack cylinder
What the coil pack cylinder is suppose to look like
It's a good time to clean off the current valve cover with a automotive degreaser. might as well clean both sides right?
Now the valve cover is super fresh and clean, and hopefully no leaks from it.
Friday, December 11, 2009
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